Why Is Only One Side of My Cars AC Working?

The most common reason for only one side of your car’s AC to be working is a leak in the system. If you’re hearing hissing or bubbling sounds from the vents, or if there’s a wet spot under the AC unit itself, it could be leaking coolant into the cabin.

This can cause extensive damage to your car’s interior, so be sure to have the car checked by a mechanic as soon as possible. Another common reason for only one side of your car’s AC not working is simply because there’s no power getting to that side of your car’s air conditioner.

This can happen if there are multiple cars plugged into an outlet at once, or if there are too many items running off of one circuit in your house and it can cause all sorts of electrical problems besides just causing only one side of your AC not working.

Check the air blow

The air blow is the part of your car’s air conditioning system that pushes out cool air and regulates it to the proper temperature. It works by using refrigerant, or Freon, as its cooling agent. When this system malfunctions, it can cause your car’s AC to work improperly or not at all.

Check the transmission

The transmission can affect the cooling system by creating a vacuum in its lines, which causes air to flow through them at a slower rate. This means that one side of your car will get colder air than the other side.

If you suspect that your transmission might be causing this issue, make sure to take it into a mechanic as soon as possible so they can diagnose it correctly and get you back on the road again.

Check the battery

If your car is not getting enough power from the battery to run the air conditioner, it will only work on one side. The other side will continue to blow cool air, but at a slower rate than normal.

Check the fuse

To check the fuse, open your glove compartment and look for a plastic panel with small fuses in it. If any of them have blown, replace it with a new one that has the same rating as the old one. If this does not solve your problem, you may need to take your car to a mechanic for further diagnosis.

Check the alternator

If only one side of your car’s AC is working, you might need to check the alternator. The alternator is what powers your vehicle’s electrical system, and it can cause power issues in other areas of the car if it’s not working properly.

Check the temperature blend

The temperature blend is a valve that controls whether your air conditioner turns on at all, and if so, which side of the car it will blow through. If only one side of the car is getting cold air, the problem may be that this valve isn’t working properly.


It is important to understand that air conditioning systems are complex and may malfunction for a number of reasons. It is important to have your air conditioning system checked by a professional when you notice any signs of a problem.

It is also important to know that different types of problems require different solutions, so it is important to have an inspection performed by a trained professional who can identify the exact problem with your system and recommend the best solution.

Steven Hatman
Steven Hatman

We break down every information into easy-to-understand articles that cover all the categories anyone who owns a car needs to know about, such as oil , brakes , tires and etc. Our car guide is free and updated regularly for you to use as a resource, not only when you have an issue with your car but even before buying a new or used car! We also give tips on what to look for in each category or part of your vehicle.